Corn smut is a fungus that grows in the ears of corn and changes corn kernels into black, powdery balls of fungus tissue. What would you hypothesize is the significance of the relationship between corn smut and corn?
A) Corn smut has a parasitic relationship with corn so that it can use the corn as a way to spread spores.
B) Corn smut has a symbiotic relationship with corn so that it can use the corn as a way to spread spores.
C) Corn smut helps to decompose corn more quickly and therefore replenishes nutrients in the soil at a faster rate.
D) Corn smut slows decomposition of corn and therefore reduces the rate at which nutrients are returned to the soil.
A
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Dr. Ratard was trying to determine the cause of a mysterious epidemic affecting fish in the gulf of New Mexico. His proposal that the deaths were caused by an organism called a protist is considered a(n) _________
A. theory. B. data set. C. hypothesis. D. conclusion. E. experiment.
Olfactory centers are responsive to
a. touch. b. odor. c. taste. d. sound. e. sight.
What pattern of inheritance occurs in the ABO blood system where there are three distinct alleles in human populations?
What will be an ideal response?
Which of the following list of features describes the molluscs and bivalves but not the annelids?
A. Reduced cephalization, contain a muscular foot and a mantle, may possess a hard outer shell. B. Lack of cephalization, contains circular muscles that enable them to move, may possess a hard outer shell, and have a complete digestive system. C. Lack of cephalization, every member of the group will have a hard outer shell as well as a complete digestive system. D. Presence of cephalization, contain a muscular foot and a mantle, may possess a hard outer shell and have a complete digestive system. E. None of these lists describes the molluscs and bivalves but not the annelids.